(19)
(11) EP 2 133 206 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.01.2010 Bulletin 2010/02

(43) Date of publication A2:
16.12.2009 Bulletin 2009/51

(21) Application number: 09161887.6

(22) Date of filing: 04.06.2009
(51) International Patent Classification (IPC): 
B41J 2/21(2006.01)
 B41J 2/195(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

(30) Priority: 12.06.2008 JP 2008154341

(71) Applicant: Ricoh Elemex Corporation
Chikusa-ku Nagoya-shi Aichi 464-0075 (JP)

(72) Inventors:
  • Hayashi, Hirotaka
    Nagoya-shi, Aichi 464-0075 (JP)
  • Ito, Kazumasa
    Nagoya-shi, Aichi 464-0075 (JP)

(74) Representative: Schwabe - Sandmair - Marx 
Patentanwälte Stuntzstraße 16
81677 München
81677 München (DE)

   


(54) Liquid-spray-failure detecting device


(57) A light-emitting element (33) emits a light beam and a light-receiving element (35) receives the light beam emitted from the light-emitting element (33). The light-emitting element (33) is installed in such a manner that the light beam collides with a sprayed liquid droplet so that a spray failure of the liquid droplet is detected based on an output change of the light-receiving elements (35). A mist shielding plate (40) includes an elongated hole (41) through which liquid droplets sprayed from a plurality of nozzles pass and prevents a mist floating apart from the liquid droplets from passing through the elongated hole (41).







Search report